Remember this is the emergency life pod jumper, not your regular jumper lol

I mean I doubt Sheppard would bring a portable cd player and big headphones as part of his counter attack kit and I doubt the midway crew all carry a deck of cards with them at all times.

Because they knew this jumper would be out there for weeks potentially, it's probably stacked with essential supplies (food, water, "business" items, chem toilet) as well as other things (treats like cake and pie, cards, video games, cd players) to help them pass the time.